QPlatformWindow: Add Window masks.

Add functionality for window masks to QPlatformWindow, which is
required to implement QWidget::setMask() in order to fix
the regression in functionality from Qt 4.8.

Change-Id: I2c2d5629f0b4c6d90e52595ad70b13559aab1f41
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformwindow.h b/src/gui/kernel/qplatformwindow.h
index 604398909d..d9f79f25eb 100644
--- a/src/gui/kernel/qplatformwindow.h
+++ b/src/gui/kernel/qplatformwindow.h
@@ -68,6 +68,7 @@ class QPlatformScreen;
 class QPlatformWindowPrivate;
 class QWindow;
 class QIcon;
+class QRegion;
 
 class Q_GUI_EXPORT QPlatformWindow : public QPlatformSurface
 {
@@ -105,6 +106,7 @@ public:
     virtual void propagateSizeHints();
 
     virtual void setOpacity(qreal level);
+    virtual void setMask(const QRegion &region);
     virtual void requestActivateWindow();
 
     virtual void handleContentOrientationChange(Qt::ScreenOrientation orientation);